package com.coder.spit.service;

import com.coder.spit.dao.SpitDao;
import com.coder.spit.pojo.Spit;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import util.IdWorker;

import java.util.Date;
import java.util.List;

/**
 * @BelongsProject:coder_parent
 * @BelongsPackage:com.coder.spit.service
 * @Author:linchong
 * @CreateTime:2019-01-02 11:28
 * @Description:
 */
@Service
@Transactional
public class SpitService {
    @Autowired
    private SpitDao spitDao;

    @Autowired
    private IdWorker idWorker;

    @Autowired
    private MongoTemplate mongoTemplate;

    public List<Spit> findAll(){
        return spitDao.findAll();
    }

    public Spit findById(String id){
        return spitDao.findById(id).get();
    }

    public void save(Spit spit){
        spit.set_id(idWorker.nextId()+"");
        spit.setPublishtime(new Date()); //发布日期
        spit.setVisits(0); //浏览量
        spit.setShare(0); //分享数
        spit.setThumbup(0);//点赞数
        spit.setComment(0);//回复数
        spit.setState("1");//状态
        //如果当前添加的吐槽，存在父节点，那么父节点的回复数要加一
        //保存时进行判断,如果存在父节点，更新父节点的回复数
        if(spit.getParentid()!=null&&!"".equals(spit.getParentid())){
            Query query = new Query();
            query.addCriteria(Criteria.where("_id").is(spit.getParentid()));
            Update update = new Update();
            update.inc("comment",1);
            mongoTemplate.updateFirst(query,update,"spit");
        }
        spitDao.save(spit);
    }

    public void update(Spit spit){
        spitDao.save(spit);
    }

    public void deleteById(String id){
        spitDao.deleteById(id);
    }

    public Page<Spit> findByParentid(String parentid,int page,int size){
        Pageable  pageable = PageRequest.of(page-1,size);
        return spitDao.findByParentid(parentid,pageable);
    }

    public void thumbup(String spitId) {
        //1.效率存在问题,两次数据库交互
        //Spit spit = spitDao.findById(spitId).get();
        //spit.setThumbup((spit.getThumbup()==null?0:spit.getThumbup())+1);
        //spitDao.save(spit);
        //2.使用原生mongo命令实现自增，db.spit.update({_id:"1"},{$inc:{thumbup:NumberInt(1)}})
        Query query = new Query();  //指定条件
        query.addCriteria(Criteria.where("_id").is("1"));
        Update update = new Update();
        update.inc("thumbup",1);
        mongoTemplate.updateFirst(query,update,"spit");
}
}
